Brake mechanism for talking-machines.



P. NYSTROM. BRAKE MEEHNISM `FR TALKING MACHINES,

APPLICATSON FILED MAY 20, '1916.

hiee@ Dm i2, E916.

it WAM rl y MARTIN NYSTROM, OF CHICAGO, ILLINOIS, ASSIGNOR 'IOBRUNSWICK-BALKE- COLLENDER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATIONF DELAWARE.

BRAKE MECHANISM FOR TALKING-MACHINES.

Application filed May 20, 1916. Serial No. 98,820.

To'ull /11' hom 'it 'm (1)/ concern Be it known that I, MARTIN NYs'rRoM,a citizen o1 the United States, residing at Chicago, in the county ofCook and State of Illinois, have invented certain new and usefulImprovements in Brake Mechanisms for Talking-llachines, ol' which thefollowing is a specification.

This invention relates in general to talking machines and moreparticularly7 to an automatically operable brake mechanism therefor.

The primary object of my invention is the provision oi readilyadjustable means for automatically stopping the rotation of the recordtable when the reproduction has been completed.

A further object of my invention is the provision of means whereby thebrake-releasing means is readily set to operate at the desired point inthe travel of the tone arm which point varies with the particular recordreproduced. v

Further objects and advantages of my inf vention will be apparent as itis better understood by reference to the following specification whenread in connection with the accompanying drawing, illustrating theprefer-red embodiment thereof, in which- Figure 1 is a plan view of atalking machine' with my improved brake mechanism applied thereto; Fig.2 is a side elevation partially in section of the structure illustratedin Fig. 1; Fig. 3 is an enlarged detail in perspective of the brake andthe latch therefor, and Fig. 4 is an enlarged sectional detailillustrating the adjustable means for releasing the latch.

Referring to the drawings, 1 indicates a suitable casing or support uponwhich the record table 2 is rotatably mounted to support the record 3.The table 2 is driven by a suitable mechanism well known in the art andtherefore not illustrated and is preferably provided with a dependingfla-nge 1. A tone arm 5 is supported in movable relation to the soundamplifier 6 and is provided with a sound box 7 carrying a stylus 8adapted to cooperate .with the record 3 in' the well known manner toAreproduce the sounds recorded on the record.

A plate 9 is secured to the upper surface of the support 1 beneath thetable 2. Pivotally mounted at 10 on the plate 9 is a brake 11 having amanually operable handle 12 projectingilteyond the periphery of thetable 2 and friction material 13 adapted to cooperate with the innerface of the depending flange L1 to prevent rotation of the table 2 whenthe brake is in operative position. The brake 11 is provided with twoabutments 111 and 15.

Pivotally mounted at 16 on the plate 9 is adatch 17 having an arm 18adapted to cooperate with the abutment 14 to limit the movement of thebrake 11 and with the abutment 15 to retain the brake 11 in inoperativeposition. A spring 19 provides a resilient connection between the brake11 and the latch. 17 and an abutment 20 on the plate 9 limits themovement of the latch 17 by euga gement of the arm 18 therewith.

Pivotally mounted at 21 on the plate 9 is a lever 22 which is pivotallyconnected at 23 to the latch 17. The lever 22 is provided with an arm 21extending beyond the periphery of the table 2 in the path of a dependingfinger 25 of the member 2G pivotally mounted at 27 on a plate 28 securedto the tone arm 5. The plate 28 is provided with an indicator 29 bearinga plurality of numerals 30 adjacent a slot 31 in which the end of themember 26 operates. A handle 32 is provided whereby the member 2G may bereadily adjusted with respect to the indicator' 29.

The mode of operation of my invention is as tollows: When the operatordesires to release the table 2 the handle 12v is moved in the directionof the bottom of the sheet, viewing Fig. 1, the spring 19 being therebyplaced under tension and the arm 18 of the latch 17 being caused toengage the abutment 15 to retain the brake 11 in-inoperative position.The stylus 8 is then p laced in the outermost groove of the record inthe usual manner. lVhen the reproduction has been completed the finger25 will engage the arm 21 of the lever 22, thereby swinging the lever 22and the latch 17 on their respective pivots to withdraw the arm 18 fromengagement with the abutment 15 and allow the spring .19 to move thebrake 11 to operative position to prevent further rotation of the table2.- Obviously the point inthe travel of tlle tone arm 5 when thereproduction iscompleted will vary v"with individual recordsandconsequently it is necessary vto adjust the finger 25 for eachrecord. This is accomplished by placing the stylus 8 in approximatelythe Patented Dec. 12, 1916.

innermost CTI groove of the record and swinging the member 26 to aposition in engagement with the arm 24 of the lever 22, the brake 11having been first moved to inoperative position. The numeral on theindicator 29 adjacent the end of the member 26 when so adjusted is thenmarked upon the record so that the member 26 can be thereafter in'-stantly adjusted to the proper position to release the brake 11 when thereproduction of the particular record is complete. When the records havebeen so marked it is unnecessary to experimentally determine the lproperposition of the member 26 to secure the effective operation of themechanism.

The brake 11 may be manually moved to operative position by the hanle 12when de'- sired without Waiting for the automatic release of the brakesince the movement of the handle 12 in the direction of the top of the 5sheet, viewing Fig. l, will cause the abuti scribed beingr merely apreferred embodi- -with the abutment 15 ment 15 to swing the latch 19 onits pivot 16, thus carrying the arm 18 out of engagement and into thepath of the abutment 14. l

It will be appreciated from the foregoing that I have perfected a brakemechanism for talking machines which is peculiarly advantageous'becauseof the ease with which the automatic means for releasing the brake maybeset to operate in conjunction with i11- dividual records withoutexperimentally determinin ber 26 w enever a particular record is used.Itl will be further understood that various changes may be made in theform, construction and arrangement of the parts without departing fromthe' spirit and scope yof the invention or sacrificing any of itsmaterial advantagesgf the form hereinbefore dement thereo 1. In amechanism of the character described, the combination of a brake adaptedto engage a moving part of a talkin machine, a latch to normally retainsaid rake in inoperative position, and means for releasing" said brakeincluding a lever pivotally connected to said latch, a member adjustablymounted on a tone arm of the talking machine and an indicator coperatingwith said member, whereby said member may be readily set to release saidbrake at predetermined points in the travel of said tone arm.

'2. In a mechanism of the character de scribed, the combination of apivotally mounted brake adapted to engage a moving part of` a talkingmachine, a pivotally mounted latch to normally retain said brake ininoperative position, a spring connecting said brake and latch, andmeans for releasing said brake including a lever pivotally connected tosaid latch, a member adjustthe operative position 0f the mem-v scribed,the combination of 'a rotatable 'a pivotally mounted latch ablymounted'on the tone arm of the talking machine and anjndicatorcooperating with said member, whereby` said member may be readily set torelease y'aid brake at predetermined points in the travel of said tonearm.

3. In a mechanism of the character described, the combination of apivotally mounted brake adapted to engage a moving part of a talkingmachine, means for manually moving said brake to operative orinoperative position, a latch resiliently connected to said brake tonormally retain said brake in inoperative position, and means toautomatically release said brake including a pivoted lever connected tosaid latch, a member adjustably secured to the tone arm ofthe talking lan indicator` cooperating with said member, whereby said member may bereadily set to release said brake at; predetermined points in the travell of the tone arm.

4. In a mechanism of the character described, the combination of arotatable table, a pivotally mounted brake adapted to engage said table,and having an abutment thereon, a pivotally mounted latch having meansthereon to engage said abutment and thereby retain said brake ininoperative position, a springconnecting said brake and latch, a leverpivotally connected to said latch, a toe arm, and means carried therebyto enga e said lever and move said latch to release said brake.

5. In a mechanism ofthe character detable, a pivotally mounted brakeadapted toV engage said table 'and having an abutment thereon, means formanually moving said brake Vto operative or inoperative position,having' means thereon to engage said abutment and thereby retain saidbrake in inoperative position, a spring connecting said brake and latch,a lever pivotally connected to said latch, a tone arm, and means carriedthereby to engage said lever and move said latch to release said brake.

6. In amechanism of the character described, the combination of arotatabletable, a pivotally mounted brake adapted to engage said tableand having an abutmentthereon, a

pivotally mounted latch having means;y

7. In a mechanism of the character de iso incr/,ese

scribed, the combination of a rotatable table provided with a dependingange, a pivotally mounted brake adapted to engage the inner face of saidiange and provided with anA abutment, means for manually moving saidbrake to operative'or inoperative posi- Jsionj a pivotally mounted latchhaving means thereon to engage said abutment and thereby retain saidbrake in inoperative position, a Sp1-ing connecting Said brake and iath,a .lever pivotally connected to Said latch, a movable tone arm, a memberadjustably mounted on said tone arm and having a depending Iingeradapted to engage said lever, and an indicator coperating with saidmember whereby said finger .may be readily set to release said brake at|predetermined points in the travel of said tone arm.

MAR-TIN NYSTROM. i/Vitnesses M. D. HENDRICKSON, S. J. RUBRY.

